If metal subgenres were teens:
Classic heavy metal: that drunk dude trying to do some music
Power metal: that one who fights against bullies
Thrash metal: that R E B E L dude trying to change the world and make a revolution
Black metal: that depressed satanist who tried to commit suicide
Death metal: that psycho, everyone thinks they're weird and people are kinda scared of him, wants to kill everyone
Doom metal: that mysterious quiet kid, 4678654 rumors about them exists, never talked to nobody but looks kinda scary
Progressive metal: the smart kid fighting against the society "treat with kindness" is his motto
Folk metal: the girl who reads fantasy books, has crush on Legolas, wants to be an elf
Symphonic metal: that one kid who plays like 35786 instruments like a master, listens only to Beethoven, music teacher loves them